- From: Richard Cyganiak <richard@cyganiak.de>
- Date: Thu, 19 May 2011 20:48:44 +0100
- To: David McNeil <dmcneil@revelytix.com>
- Cc: Enrico Franconi <franconi@inf.unibz.it>, Ivan Herman <ivan@w3.org>, Pat Hayes <phayes@ihmc.us>, Michael Hausenblas <michael.hausenblas@deri.org>, W3C RDB2RDF <public-rdb2rdf-wg@w3.org>
On 19 May 2011, at 14:24, David McNeil wrote: > The other question is whether it is more practical to query on the presence of a NULL value in a triple rather than the absence of a triple especially in light of the goal of using SPARQL 1.0. Mapping NULL to a literal or URI might kinda sorta work in SPARQL, but wreaks havoc with RDFS, OWL and RIF. I seriously don't think it's an option. Best, Richard
Received on Thursday, 19 May 2011 19:49:13 UTC